Really nice drink, with every component just perfectly balanced. Every element, from the esters of the rum (I used Havana Club 3), the fruitiness, woodiness and grape-y nature of the Cognac, along with the citrus sweetness of the orange, plus tartness of the lime (with the exception of aquafaba in place of egg white, which merely contributed the foam) came through so wonderfully. I'd give this a 4.5, personally.
This was one of the cocktails of the day in memory of the introduction of the spreadsheet. As I was an user of Lotus 1-2-3, made it in honour. It is a very flavourful and interesting sour. It is spirit forward, but the combination of the rum and cognac along with the juices gives the cocktail a unique taste.